diff --git a/Gemfile.lock b/Gemfile.lock
index 413ec3e..e819f66 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -40,13 +40,13 @@ GEM
     multi_json (1.15.0)
     mustermann (1.1.1)
       ruby2_keywords (~> 0.0.1)
-    nio4r (2.5.7)
+    nio4r (2.5.8)
     parallel (1.20.1)
     parser (3.0.0.0)
       ast (~> 2.4.1)
     pg (1.2.3)
     public_suffix (4.0.6)
-    puma (5.2.2)
+    puma (5.6.4)
       nio4r (~> 2.0)
     rack (2.2.3)
     rack-protection (2.1.0)